Cosmic Information Theory and Analysis

宇宙信息论与分析

• 批准号: 1141-2012
• 负责人: Bond, Richard
• 金额: $ 9.83万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=543942
• 关键词: Cosmic; Information; Theory; Analysis

The production, transport, measurement and meaning of Cosmic Information in theory and with data will be a major theme in 2012-17. Over three decades my group has shown with ever increasing precision that cosmic observables - mostly from CMB experiments we were/are directly involved in - provide key information on structure formation, and the parameters that define it, such as the baryon, dark matter and dark energy (DE) densities, average curvature, size, and those for primordial inflation fluctuations generated, including power spectrum amplitudes and shapes and possible non-Gaussianity. With large scale structure (LSS), supernova and CMB data, we determine allowed physically-motivated trajectories of the dark energy equation of state (DE EOS). We are a critical analysis node of CMB teams, currently immersed in data from the satellite Planck, the Atacama Cosmology Telescope (ACT) and the Cosmic Background Imager (CBI2); in the immediate past from Boomerang, CBIpol, Acbar and WMAP; in 12-17 from WMAP9, ACTpol, ABS, Spider, GBT, Quiet-90 and Planck. By developing/applying theoretical computations of all types and sophisticated statistical tools, we have determined well in 06-11 the CMB temperature and E-polarization power spectra, and will do so exquisitely in 12-17. Many long-term theoretical and phenomenological projects underway to interpret the data avalanche include: the thermal and kinetic CMB Sunyaev-Zeldovich effects, using large hydrodynamical simulations of the cosmic web with energy-feedback; CMB gravitational lensing; extragalactic radio sources and sub-mm sources ( Cosmic Infrared Background); Galactic foregrounds (e.g., polarized dust emission via novel statistical measures of MHD turbulence). A 12-17 target is CMB B-mode polarization to detect inflation-generated gravitational waves or set theory-killing upper limits. Related fundamental physics projects will develop/apply our trajectory methods for inflation-acceleration, the DE EOS and ionization fraction and our non-Gaussian forms from modulated post-inflation-preheating shocks-in-time to the full emerging CMB+LSS data, conditioned by theoretical priors, e.g., motivated by a string landscape.

在理论上和数据上的宇宙信息的生产，运输，测量和意义将是2012-17年的一个主要主题。 在过去的三十年里，我的团队已经以越来越高的精度证明了宇宙观测数据-主要来自我们直接参与的CMB实验-提供了关于结构形成的关键信息，以及定义它的参数，例如重子，暗物质和暗能量（DE）密度，平均曲率，大小，以及产生的原始膨胀波动，包括功率谱幅度和形状以及可能的非高斯性。利用大尺度结构（LSS）、超新星和宇宙微波背景（CMB）数据，我们确定了暗能量状态方程（DE EOS）允许的物理驱动轨迹。我们是CMB团队的关键分析节点，目前沉浸在来自普朗克卫星，阿塔卡马宇宙学望远镜（ACT）和宇宙背景成像仪（CBI 2）的数据中;在不久的过去，来自Boomerang，CBIpol，Acbar和WMAP;在12-17来自WMAP 9，ACTpol，ABS，Spider，GBT，Quiet-90和普朗克。通过开发/应用各种类型的理论计算和复杂的统计工具，我们在06-11中很好地确定了CMB温度和E偏振功率谱，并将在12-17中精确地确定。许多正在进行的解释数据雪崩的长期理论和现象学项目包括：热和动力学CMB Sunyaev-Zeldovich效应，使用具有能量反馈的宇宙网的大型流体动力学模拟; CMB引力透镜;河外射电源和亚毫米源（宇宙红外背景）;银河前景（例如，通过MHD湍流的新统计测量的偏振尘埃排放）。 一个12-17的目标是CMB B模式偏振探测暴胀产生的引力波或设置 理论扼杀上限。相关的基础物理项目将开发/应用我们的轨道方法，用于通货膨胀加速，DE EOS和电离分数，以及我们的非高斯形式，从调制的通货膨胀后预热冲击时间到完整的新兴CMB+LSS数据，由理论先验条件，例如，由一个字符串的风景。